Equivalent & Substitute Parts for RK73H1HTTC15R4F

Part Overview

The RK73H1HTTC15R4F is a 15.4 Ohm ±1% 0.05W chip resistor in 0201 package (0603 Metric) manufactured by KOA Speer Electronics, Inc. This component features automotive AEC-Q200 qualification and moisture-resistant thick film construction, designed for high-reliability applications in automotive and industrial environments.

The RK73H1HTTC15R4F carries a "Not For New Designs" product status, indicating that KOA Speer Electronics has transitioned this part to end-of-life. Identification of equivalent and substitute parts is necessary to maintain design continuity, support existing production requirements, and ensure long-term component availability for legacy systems and ongoing manufacturing operations.

Substiute Parts

RK73H1HTTC15R4F

KOA Speer Electronics, Inc.In Stock: 1198RK73H1HTTC15R4F Datasheet

Current PartRFQ

RK73H1HTTCM15R4F

KOA Speer Electronics, Inc.In Stock: 728RK73H1HTTCM15R4F Datasheet

MFR RecommendedRFQ

AC0201FR-0715R4L

YAGEOIn Stock: 990AC0201FR-0715R4L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC15R4F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 15.4 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture resistance capability
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height - Seated (Max): 0.010" (0.26mm)
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the original part. Substitution is valid across all identified alternatives without circuit redesign or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM15R4F (KOA Speer Electronics, Inc.)

The RK73H1HTTCM15R4F is the manufacturer-recommended equivalent from KOA Speer Electronics. This part maintains active product status and carries identical electrical and mechanical specifications to the original RK73H1HTTC15R4F. Selection of this part ensures continuity within the KOA Speer RK73H series platform and provides direct compatibility without design modification. The part is currently in stock with 696 units available.

Secondary Substitute: AC0201FR-0715R4L (YAGEO)

The AC0201FR-0715R4L from YAGEO provides a cross-manufacturer alternative with equivalent electrical performance and mechanical compatibility. This part maintains active product status, AEC-Q200 automotive qualification, moisture-resistant thick film construction, and identical package specifications. The AC0201FR-0715R4L is currently in stock with 896 units available and offers extended supply chain flexibility through multi-source qualification.

Both substitute parts satisfy all critical electrical parameters, thermal performance requirements, automotive compliance certifications, and environmental ratings specified for the original component. Selection between these alternatives may be based on supply chain strategy, inventory position, and existing qualification documentation within the design organization.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM15R4F be used as a direct replacement for RK73H1HTTC15R4F?

A: Yes. The RK73H1HTTCM15R4F is the manufacturer-recommended equivalent from KOA Speer Electronics. Both parts share identical resistance (15.4 Ohms), tolerance (±1%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), AEC-Q200 qualification, and physical dimensions. The primary difference is product status: RK73H1HTTCM15R4F is active, while RK73H1HTTC15R4F is not for new designs.

Q: What is the difference between RK73H1HTTC15R4F and RK73H1HTTCM15R4F?

A: Both parts are 15.4 Ohm ±1% 0.05W thick film chip resistors in 0201 package with AEC-Q200 qualification and ±200ppm/°C temperature coefficient. The RK73H1HTTC15R4F includes moisture-resistant construction, while the RK73H1HTTCM15R4F specification does not explicitly list moisture resistance. The RK73H1HTTCM15R4F carries active product status, making it the preferred choice for ongoing production.

Q: Is AC0201FR-0715R4L compatible with RK73H1HTTC15R4F in automotive applications?

A: Yes. The AC0201FR-0715R4L from YAGEO meets all electrical and mechanical requirements for direct substitution. Both parts are AEC-Q200 qualified, feature moisture-resistant thick film construction, operate across -55°C ~ 155°C, and are housed in identical 0201 packages with matching dimensions and electrical specifications. The AC0201FR-0715R4L is suitable for automotive applications requiring the same performance envelope.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts—RK73H1HTTCM15R4F and AC0201FR-0715R4L—carry ROHS3 compliance certification, matching the original RK73H1HTTC15R4F specification.

Q: What is the MSL rating for these resistors?

A: All parts listed carry MSL rating 1 (Unlimited), indicating unlimited shelf life without moisture bake-out requirements prior to soldering.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All substitute parts maintain identical package specifications (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W), and height (0.010" max seated height). No PCB layout modifications are required for substitution.

Q: What is the temperature coefficient specification, and does it affect substitution?

A: All parts share a temperature coefficient of ±200ppm/°C, ensuring equivalent thermal performance across the -55°C ~ 155°C operating range. This parameter is identical across all alternatives and does not impact substitution decisions.